Air-compressor



Patented Mar. 7, I899. H. E. ANDERSON.

- AIR=COMPRE$SOR.'

'(Applicaltion filed Mar. 1, 1898.?

2 Sheets$heet I.

(No Model.)

lNVENTO/r .A TTOH/VEYS.

m: N'oams PETERS co. vnoro-ummmsnmomm 0. c.

3 Patented Mar. 7, I899. H. E. ANDERSON. AIR COMPRESSOR. (Applicationfiled Mar. 1, less},

2 Sheets$haet 2.

(No Model.)

o 0 0 l o IIIIIIIIIIIIIIIIIIIII INVENTUH ATTORNEYS W/ TNE SSE S THENonms PETERS co. wncYouwu, wAsulusYm. c.

UNITED STATES PATENT EEicE.

HENRY E. ANDERSON, OF OHEBOYGAN, MICHIGAN.

AIR-COMPRESSOR.

SPECIFICATION forming part of Letters Patent No. 620,822, dated March'7, 1899.

Application filed March 1, 1898.

To all whom, it may concern:

Be it known that I, HENRY E. ANDERSON, of Cheboygan, in the county ofOheboygan and State of Michigan, have invented a new and ImprovedAir-Compressor, of which the following is a full, clear, and exactdescription.

Myinvention relates to an improy ement in air-compressors, and comprisescertain novel features of construction, which will be hereinafterdescribed and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is an end elevation of my device. Fig. 2 is a cross-sectionalelevation taken upon the line 2 2 of Fig. 1. Fig. 3 is a longitudinalsection taken through the air-compressing cylinder. Fig. 4 is across-section taken upon the line 4 4. of Fig. 3. Fig. 5 is alongitudinal section taken through the hollow shaft of the device,showing the manner of connecting it to a fixed non-rotating shaft; andFig. 6 is a cross-section taken upon the line 6 6 of Fig. 5.

One form of my invention is shown in the drawings, the same being theform in which the device is mounted to rotate upon a cen tral shaft andis supported upon a fixed frame. This frame A may be made of anysuitable shape, and is provided with bearings adapted to receive theshaft B, upon which the air-compressing mechanism is mounted.

Supported upon the shaft B is a framework 0, so constructed as toprovide guideways extending in the direction of chords of a circle. Inthese guideways are mounted weightsD of such size as to have a limitedreciprocation in said guideways. -As herein shown, four of theseguideways and four weights are provided, each of the weights beingconnected by an arm F to the piston-rod f of an aircompressing cylinderE, fixed to the framework C. The cylinders E may be of any ordinarydouble-acting constructionthat is, so

that they compress the air when the weights are moving in eitherdirection. The construction used is shown in Figs. 3 and 4t and providesfor puppet-valves e and 6, located in each head of the cylinder, one ofthe valves being an admission-valve and the other Serial No. 672,160.(No model.)

a discharge-valve, these valves connecting with a common discharge-pipeJ. The cylinders E are also provided with a coolingjacket G, throughwhich circulates a supply of cooling-water. The chambers formed by thiscooling-jacket are connected by means of pipes I to one portion of themain shaft B,

which shaft is hollow and is provided with two partitions H. One of thepartitions is provided with a central hole which receives thewatersupply pipe I). The water-supply pipe I, connecting the shaft withthe coolingchambers surrounding the cylinder, is connected to the mainshaft between these two partitions.

The pipe I, which conveys the return water away from the jackets, isconnectedto a common discharge-pipe I and the latter is connected byradial pipes 1 to the main shaft B at one side of the partitions H. Bythis construction the cooling-water enters through the pipe 2) into thechamber between the two partitions, and from there flows B, and withinthis cup is a pipe-section B 7 which has a washer B of leather, rubber,or similar flexible packing material, secured to the end thereof bymeans of the ring 13. This washer B extends beyond the pipe-section Band is pressed against the inner face of the flange upon the outer endof the cup B and thus forms a tight joint. or other suitableconveying-pipe is connected to the outer end of the pipe-section 13 andconveys the air to any point where it is desired. A flange B justoutside the flange on the cup 13 prevents the pipe-section B? from beingforced inward. A joint of this or similar character should be providedat the other end of the shaft.

The operation of the device is as follows: The mechanism is rotated uponits shaft by some outside power. As the weights D reach A hose 15 thetop of the mechanism they have a tendency to slide toward the oppositeend of the guideways C. As the weights drop they move the piston of theair-compressor, and thus compress a certain quantity of air. The twoweights D, which are upon each side of the device, as shown in Fig. 1,are at the end of their stroke. The weights D as they are caused to risefrom their lower position by the revolution of the mechanism drop backin the guideways, and thus compress air in the cylinders. It will thusbe seen that a complete double stroke of the air-compressing piston iscaused during each revolution of the device. In consequence of this acontinual supply of fresh air is furnished by the device and dischargedthrough the hollow shaft. This air may be used for any purpose desired.

The mechanism, as shown in Figs. 1 and 2, is provided with an outercircular casing J, which may be constructed of boiler-iron or any othersuitable material, thus transforming the device in appearance into aroller. If this device be taken off of the fixed mounting (shown inFigs. 1 and 2) and rolled upon a track or any supporting-surface, theair-compressing mechanism will be operated in identically the samemanner. This device may therefore be used either upon a fixed mountingor by rolling upon a surface, and such surface may be aspecially-prepared one, as a track having rails thereon, or may be thesurface of the ground.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent?- 1. An air-compressor, comprising a framerevoluble about a shaft, and having guideways extending in the directionof chords of a circle about said shaft, weights mounted in saidguideways to have a limited reciprocating motion, an air-compressingcylinderand a piston therein attached to each of said weights,substantially as described.

2. An air-compressor, comprising a frame revoluble about a shaft, andhaving guideways extending in the directionof chords of a circle aboutsaid shaft, weights mounted in said guideways to have a limitedreciprocating motion, an air-compressin g cylinder and a piston thereinattached to each of said weights, an axial discharge-pipe, andconnections from the cylinders to said discharge-pipe, substantially asdescribed.

3. An air-compressor, comprising a frame having a central hollow shaftwith two central partitions, guideways extending in direction of chordsof a circle about said shaft, weights in said guideways having a limitedreciprocation, an air-compressor cylinder and a piston therein attachedto each weight, dis charge connections from the cylinders to one end ofthe shaft, said cylinders having water-chambers surrounding and coolingthe cylinders, and water connections from said chambers to the other endof the shaft, substantially as described.

4. An air-compressor, comprising a frame having guideways therein,weights having a limited reciprocation in said guideways, anaircompressor operatively connected with each weight, and having watercirculating or cooling chambers, a hollow shaft upon which said frameturns, said shaft having two crosspartitions, air-discharge pipesconnecting the cylinders to one end of said pipe, a circulating-pipepassing through one end of the hollow shaft and one partition, andconnections from the circulating-chamber of each cylinder to the shaftupon the opposite side of said partition, substantially as described.

5. An air-compressor, comprising a cylinder having guidewaystherein,weights having a limited reciprocation in said guideways, anaircompressing cylinder and a piston therein connected with each weight,substantially as described.

HENRY E. ANDERSON.

Witnesses:

H. W. SWIFT, ARCHIE STALKER.

